[announce] GEE/Streams 0.1

From:

Marco Maggi

Subject:

[announce] GEE/Streams 0.1

Date:

Tue, 4 Dec 2007 20:34:56 +0100

GEE/Streams is a C language library extension for Guile, the
GNU's Ubiquitous Intelligent Language for Extensions. It
implements a replacement for the (ice-9 streams) module
distributed with Guile.
If we are not Scheme newbies and we see a form starting with
(fold ...): we know immediately the structure of its
code. There is a great advantage if we compare this with the
time required to understand the control flow of an
equivalent explicitly coded form.
Streams are an answer to the questions: ``Is it possible to
apply a FOLD like procedure to a non--list sequence of
values? And what about MAP and FOR-EACH?''
Guile already comes with the (ice-9 streams) module, which
allows Scheme level code to iterate over non--list sequences
of values. GEE/Streams is a C language re-implementation of
the same interface that allows both Scheme and C code to
define streams.
The advantages upon the pure Scheme module are:
* speed, especially with long sequences;
* the procedures work with streams, lists and vectors;
* (gee misc streams-1) loads GOOPS: a class is defined and
bound to the <stream> symbol; that way GOOPS generic
functions can dispatch methods for streams (unfortunately
there is no way to select a base <sequence> class);
streams can be implemented with both a Scheme or C producer
function.
<https://gna.org/projects/gee>
<http://download.gna.org/gee/gee-streams/gee-streams-0.1b5-src.tar.bz2>
--
Marco Maggi
"Now feel the funk blast!"
Rage Against the Machine - "Calm like a bomb"